body{
    color: #61687c;
}
.main{
    margin-top: 20px;
}
/*===========左侧模块===========*/
#nav_bar .left_brief {
    padding: 20px;
    box-sizing: border-box;
    background-color: #fbfafb;
    border: 1px solid #fbfafb;
}

#nav_bar .left_brief:hover {
    border: 1px solid #00d7c6;
}

#nav_bar .left_brief > h3 {
    margin-top: 10px;
    font-weight: normal;
}

#nav_bar .left_brief > div {
    color: #9fa3b0;
}

#nav_bar .left_brief > div > span {
    margin-left: 5px;
    color: #61687c;
}

.btn_box {
    margin-top: 20px;
    text-align: center;
}

.btn_box > button {
    height: 30px;
    margin: 0 5px;
    outline: none;
    cursor: pointer;
    border: 1px solid #2ABCB9;
}

.btn_box > button:first-child {
    background-color: #00d7c6;
    color: #fff;
}

.btn_box > button:last-child {
    color: #00d7c6;
    background-color: #fff;
}

.btn_box > button:first-child:hover {
    background-color: #2ABCB9;
    color: #fff;
}

.btn_box > button:last-child:hover {
    color: #2ABCB9;
    background-color: #f8f8f8;
}

#nav_bar .left_body {
    background-color: #fbfafb;
    box-sizing: border-box;
}

#nav_bar .left_body > a {
    text-decoration: none;
    line-height: 50px;
    border: 1px solid #eee;
    display: block;
    position: relative;
    overflow: hidden;
    padding-left: 15px;
    box-sizing: border-box;
}

#nav_bar .left_body > a:link,
#nav_bar .left_body > a:visited,
#nav_bar .left_body > a:active {
    color: #61687c;
}

#nav_bar .left_body > a:hover {
    color: #00d7c6;
}